Impurity removal device for millet based on air flow sorting

Abstract

The utility model relates to the field of impurity removal device, especially millet impurity removal device based on airflow sorting, including bottom plate, the upper end of bottom plate is equipped with support mechanism, installs the first motor for the rotation of support mechanism on support mechanism. The utility model discloses under the rotation of gear and gear ring drive of screening box, carries out dynamic screening to millet through sieve hole and steel wire net, can separate out the larger small stone and other impurities quickly, airflow sorting and mechanical screening combine, utilize the buoyancy of airflow to distinguish the light and heavy impurities further, ensure the efficient separation of millet and impurities, through electric heating rod heating the air in the center cylinder, cooperate with the blower to blow out the hot airflow from the air outlet groove and air outlet hole evenly, dry millet in the sorting process synchronously, reduce its moisture content, high -speed hot airflow can effectively blow off the dust and other light impurities attached to the surface of millet, solved the defect that the traditional mechanical screening cannot utilize airflow to dry and dust removal.

Description

Technical Field

[0001] This utility model belongs to the field of impurity removal devices, specifically relating to a millet impurity removal device based on airflow sorting. Background Technology

[0002] During the harvesting and processing of millet, various impurities are often mixed in, such as dust, grass clippings, bran, small stones, and other grains. These impurities not only affect the appearance and taste of millet, but may also pose a potential threat to consumers' health.

[0003] Traditional impurity removal methods mainly rely on mechanical sieving and manual sorting. Mechanical sieving usually involves placing millet into a sieve with a certain aperture size. By vibrating the sieve, the millet passes through the mesh, while impurities are retained in the sieve. However, existing millet impurity removal devices are difficult to use airflow to dry the millet and blow off some of the dust on it. They are also inconvenient to quickly remove millet and larger pebbles and other impurities, and require further improvement. Utility Model Content

[0004] To overcome the problem that existing millet impurity removal devices are difficult to use airflow to dry millet and blow off some of the dust on the millet, and are inconvenient to quickly remove millet and larger pebbles and other impurities, an airflow-based millet impurity removal device is proposed.

[0005] The technical solution of this utility model is as follows: a millet impurity removal device based on airflow sorting, including a base plate; a support mechanism is provided at the upper end of the base plate, a first motor for rotating the support mechanism is installed on the support mechanism, a lower housing is installed on the support mechanism, an upper housing is threadedly installed on the upper inner wall of the lower housing, a second motor is fixedly connected to the upper end of the upper housing, the output shaft of the second motor passes through the upper end of the upper housing and is fixedly connected to a gear, a feed cylinder is fixedly connected through the upper end of the upper housing, and a sealing mechanism for the lower end of the feed cylinder is provided inside the feed cylinder;

[0006] The lower end of the lower box has multiple discharge troughs. A central cylinder and an electric heating rod are fixedly connected to the center of the bottom surface of the lower box. Multiple air outlet troughs are opened through the side wall of the central cylinder. The air outlet of a blower is fixedly connected to the upper end of the central cylinder. A screening box is placed on the bottom surface of the lower box. A sliding cylinder is fixedly connected through the center of the upper end of the screening box. The inner wall of the sliding cylinder is in contact with the side wall of the central cylinder. Multiple air outlet holes are opened through the side wall of the sliding cylinder. Multiple screen holes are opened through the lower end of the screening box. Wire mesh is fixedly connected to both the air outlet holes and the screen holes. The screen holes and the discharge troughs are interconnected. A toothed ring is fixedly connected to the upper part of the side wall of the sliding cylinder. The toothed ring meshes with a gear.

[0007] A collection box is placed on the top of the base plate.

[0008] Furthermore, the sealing mechanism includes a fixed frame, an electric cylinder, and a sealing disc. The fixed frame is fixedly connected to the inner wall of the feed cylinder, the electric cylinder is fixedly connected to the inner wall of the fixed frame, and the sealing disc is fixedly connected to the lower end of the output shaft of the electric cylinder. The side wall of the sealing disc is in contact with the inner wall of the feed cylinder.

[0009] Furthermore, the support mechanism includes a vertical block, a fixed seat, a rotating rod, and a rotating ring; a vertical block is fixedly connected to both sides of the upper end of the base plate, a fixed seat is fixedly connected to the upper inclined surface of the vertical block, a rotating rod is rotatably installed on the inner wall of each of the two fixed seats, a rotating ring is fixedly connected to the end of the two rotating rods that are close to each other, the inner wall of the rotating ring is fixedly connected to the side wall of the lower housing, the first motor is fixedly connected to the side end of one of the fixed seats, and the output shaft of the first motor is fixedly connected to the end of one of the rotating rods that is away from the rotating ring.

[0010] Furthermore, the central axes of the central cylinder and the electric heating rod are collinear, with the electric heating rod located inside the central cylinder.

[0011] Furthermore, the outer diameter of the hair dryer is smaller than the outer diameter of the central cylinder.

[0012] Furthermore, a limiting hole is made through the center of the upper end of the upper housing, and the side wall of the blower fits into the inner wall of the limiting hole.

[0013] Furthermore, the lower inner surface of the upper chamber fits into the upper surface of the screening box.

[0014] Furthermore, the lower outer surface of the upper housing and the upper surface of the lower housing are fitted together.

[0015] The beneficial effects of this utility model are:

[0016] 1. The screening box rotates under the drive of gears and gear rings, and dynamically screens millet through screen holes and wire mesh. It can quickly separate larger impurities such as small stones. The combination of airflow separation and mechanical screening utilizes the buoyancy of airflow to further distinguish between light and heavy impurities, ensuring efficient separation of millet from impurities.

[0017] 2. The air inside the central cylinder is heated by an electric heating rod, and the hot air is blown out evenly from the air outlet and air outlet with the help of a blower. The millet is dried at the same time during the sorting process to reduce its moisture content. The high-speed hot air can effectively blow off the dust and other light impurities attached to the surface of the millet, which solves the defect of traditional mechanical screening that cannot use airflow for drying and dust removal.

[0018] 3. The upper and lower boxes are connected by threads, which facilitates disassembly, cleaning and maintenance. The rotation design of the support mechanism allows the device to be adjusted at multiple angles to ensure that the material is heated and screened evenly. In addition, the first motor helps to pour out the impurities in the lower box after the upper and lower boxes are separated.

[0019] 4. The sealing mechanism controls the opening and closing of the feed cylinder through an electric cylinder, precisely controlling the feeding rhythm and preventing material from flying out of the feed cylinder when the screening box rotates. In addition, when removing impurities from millet, the electric cylinder can be turned on so that the sealing plate is slightly lower than the feed cylinder. At this time, some dust can fly out through the feed cylinder, which facilitates the quick removal of dust from the millet. Attached Figure Description

[0020] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0021] Figure 2 The diagram shown is a three-dimensional cross-sectional view of the lower box, upper box, and feed cylinder of this utility model.

[0022] Figure 3 The diagram shown is a cross-sectional three-dimensional structural schematic of the sealing mechanism of this utility model;

[0023] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the upper housing of this utility model.

[0024] Figure 5 The diagram shown is a three-dimensional structural schematic of the upper housing of this utility model;

[0025] Figure 6 The diagram shown is a bottom perspective three-dimensional structural schematic of the lower housing of this utility model;

[0026] Figure 7 The diagram shown is a three-dimensional structural diagram of the lower housing of this utility model.

[0027] Figure 8 The diagram shown is a three-dimensional structural schematic of the screening box of this utility model;

[0028] Figure 9 The diagram shown is a three-dimensional structural schematic of the support mechanism of this utility model.

[0029] The markings in the attached diagram are as follows: 1. Base plate; 2. Support mechanism; 21. Stand block; 22. Fixed seat; 23. Rotating rod; 24. Rotating ring; 3. First motor; 4. Lower box; 5. Upper box; 51. Second motor; 52. Gear; 6. Feed cylinder; 61. Fixed frame; 62. Electric cylinder; 63. Sealing plate; 7. Limiting hole; 8. Discharge chute; 9. Central cylinder; 10. Air outlet chute; 11. Blower; 12. Electric heating rod; 13. Screening box; 14. Sliding cylinder; 15. Air outlet; 16. Screen hole; 17. Gear ring; 18. Collection box. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Example 1: Please refer to Figures 1-9 The millet impurity removal device based on airflow sorting includes a base plate 1; a support mechanism 2 is provided at the upper end of the base plate 1, a first motor 3 for rotating the support mechanism 2 is installed on the support mechanism 2, a lower housing 4 is installed on the support mechanism 2, an upper housing 5 is threadedly installed on the inner wall of the upper end of the lower housing 4, a second motor 51 is fixedly connected to the upper end of the upper housing 5, the output shaft of the second motor 51 passes through the upper end of the upper housing 5 and is fixedly connected to a gear 52, a feed cylinder 6 is fixedly connected through the upper end of the upper housing 5, and a sealing mechanism for the lower end of the feed cylinder 6 is provided inside the feed cylinder 6;

[0032] Multiple discharge troughs 8 are provided through the lower end of the lower box 4. A central cylinder 9 and an electric heating rod 12 are fixedly connected to the center of the bottom surface of the inner wall of the lower box 4. Multiple air outlet troughs 10 are provided through the side wall of the central cylinder 9. The air outlet end of the blower 11 is fixedly connected to the upper end of the central cylinder 9. A screening box 13 is placed on the bottom surface of the inner wall of the lower box 4. A sliding cylinder 14 is fixedly connected through the center of the upper end of the screening box 13. The inner wall of the sliding cylinder 14 is in contact with the side wall of the central cylinder 9. Multiple air outlet holes 15 are provided through the side wall of the sliding cylinder 14. Multiple screen holes 16 are provided through the lower end of the screening box 13. Wire mesh is fixedly connected to both the air outlet holes 15 and the screen holes 16. The screen holes 16 and the discharge troughs 8 are interconnected. A toothed ring 17 is fixedly connected to the upper part of the side wall of the sliding cylinder 14. The toothed ring 17 meshes with the gear 52.

[0033] A collection box 18 is placed on the upper part of the base plate 1.

[0034] In use, the upper box 5 is threaded onto the upper inner wall of the lower box 4. The sealing mechanism is activated to release the blockage in the feed cylinder 6. Then, millet is placed into the upper box 5 and the lower box 4 through the feed cylinder 6. The millet is unprocessed and contains a certain amount of small stones. Then, the second motor 51 is turned on to make the gear 52 rotate. The gear 52 meshes with the gear ring 17, causing the screening box 13 to rotate. The slide cylinder 14 moves along the side wall of the central cylinder 9. The blower 11 is turned on to generate downward air force. The electric heating rod 12 is turned on to heat the lower box 4. The hot air is blown into the interior of the screening box 13 through the air outlet slot 10 and the air outlet 15 to dry and blow the millet in the screening box 13. As the screening box 13 rotates, the millet in the screening box 13 will pass through the wire mesh in the screen hole 16 and fall down through the discharge chute 8 into the interior of the collection box 18.

[0035] Please see Figure 1 and Figure 7 In this embodiment, the central axes of the central cylinder 9 and the electric heating rod 12 are collinear, and the electric heating rod 12 is located inside the central cylinder 9, ensuring that the heat generated by the electric heating rod 12 is evenly distributed in the air inside the central cylinder 9, improving thermal efficiency, making the temperature of the blown hot air more uniform, and enhancing the drying effect on millet.

[0036] Please see Figure 1 and Figure 7 In this embodiment, the outer diameter of the blower 11 is smaller than the outer diameter of the central cylinder 9, which facilitates the quick installation of the screening box 13.

[0037] Please see Figure 1 , Figure 5 and Figure 7 In this embodiment, a limiting hole 7 is provided through the center of the upper end of the upper housing 5. The side wall of the blower 11 is attached to the inner wall of the limiting hole 7, and the position of the blower 11 can be limited through the limiting hole 7.

[0038] Please see Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 In this embodiment, the lower inner end face of the upper box 5 and the upper end face of the screening box 13 are fitted together, which enhances the sealing between the upper box 5 and the screening box 13, and also facilitates the stable rotation of the screening box 13.

[0039] Please see Figure 1 , Figure 2 , Figure 4 , Figure 7 In this embodiment, the lower outer surface of the upper housing 5 and the upper surface of the lower housing 4 are fitted together, which improves the tightness of the connection between the upper housing 5 and the lower housing 4.

[0040] Example 2: Please refer to Figure 3 Based on Embodiment 1, this application provides a technical solution: the sealing mechanism includes a fixed frame 61, an electric cylinder 62, and a sealing disc 63. The fixed frame 61 is fixedly connected to the inner wall of the feed cylinder 6, and the electric cylinder 62 is fixedly connected to the inner wall of the fixed frame 61. The lower end of the output shaft of the electric cylinder 62 is fixedly connected to the sealing disc 63. The side wall of the sealing disc 63 is in contact with the inner wall of the feed cylinder 6. When the electric cylinder 62 is turned on, the sealing disc 63 is driven to move in the vertical direction. When the sealing disc 63 is located inside the feed cylinder 6, it can seal the feed cylinder 6. When it is necessary to remove the dust in the upper box 5 and the lower box 4 through the feed cylinder 6, the height of the sealing disc 63 is adjusted so that some of the dust is discharged through the feed cylinder 6. At this time, the feed cylinder 6 acts as a dust discharge cylinder, which can improve the dust removal efficiency.

[0041] Example 3: Please refer to Figure 9Based on Embodiment 1, this application provides a technical solution: the support mechanism 2 includes a vertical block 21, a fixed seat 22, a rotating rod 23, and a rotating ring 24; the vertical block 21 is fixedly connected to both sides of the upper end of the bottom plate 1, the fixed seat 22 is fixedly connected to the upper inclined surface of the vertical block 21, the rotating rod 23 is rotatably installed on the inner wall of the two fixed seats 22, the rotating ring 24 is fixedly connected to the end of the two rotating rods 23 that are close to each other, the inner wall of the rotating ring 24 is fixedly connected to the side wall of the lower box 4, the first motor 3 is fixedly connected to the side end of one of the fixed seats 22, the output shaft of the first motor 3 is fixedly connected to the end of one of the rotating rods 23 that is away from the rotating ring 24, the first motor 3 drives the rotating rod 23 to rotate, causing the rotating ring 24 and the lower box 4 to swing slightly, which improves the screening efficiency, and after the upper box 5 is moved away from the lower box 4, turning on the first motor 3 can easily adjust the angle of the lower box 4, making it easy to pour out the impurities in the lower box 4, and making cleaning and maintenance convenient.

[0042] Working principle: When in use, first install the upper box 5 with threads on the upper inner wall of the lower box 4, and drive the sealing disc 63 to move upward by starting the electric cylinder 62 to release the blockage on the feed cylinder 6. Then, pour millet containing small stones into the upper box 5 and the lower box 4 through the feed cylinder 6.

[0043] Next, the second motor 51 is turned on to drive the gear 52 to rotate. The gear 52 meshes with the gear ring 17, driving the screening box 13 to rotate. At the same time, the slide cylinder 14 moves along the side wall of the central cylinder 9.

[0044] At the same time, the blower 11 is turned on to generate downward airflow, and the electric heating rod 12 is turned on to heat the air inside the lower box 4. The hot air is blown into the sieving box 13 through the air outlet 10 of the central cylinder 9 and the air outlet 15 of the sliding cylinder 14 to dry the millet inside and sort the airflow.

[0045] When it is necessary to remove the dust from the upper chamber 5 and the lower chamber 4 through the feed cylinder 6, adjust the height of the sealing plate 63 so that some of the dust is discharged upward through the feed cylinder 6. At this time, the feed cylinder 6 acts as a dust discharge cylinder, which can improve the dust removal efficiency.

[0046] As the screening box 13 continues to rotate, millet passes through the wire mesh of the screen hole 16 under the action of centrifugal force and hot air flow, and falls into the collection box 18 through the discharge chute 8, while the denser pebbles remain in the screening box 13.

[0047] In addition, the first motor 3 of the support mechanism 2 can drive the rotating rod 23 to rotate, causing the rotating ring 24 and the lower box 4 to swing slightly, thereby improving the screening efficiency. After the upper box 5 is removed, the impurities in the lower box 4 can be easily poured out by turning on the first motor 3 to adjust the angle of the lower box 4, making it convenient to clean and maintain the lower box 4.

Claims

1. A millet impurity removal device based on airflow sorting, comprising a base plate (1); characterized in that: The upper end of the base plate (1) is provided with a support mechanism (2), a first motor (3) for rotating the support mechanism (2) is installed on the support mechanism (2), a lower box (4) is installed on the support mechanism (2), an upper box (5) is threaded on the inner wall of the upper end of the lower box (4), a second motor (51) is fixedly connected to the upper end of the upper box (5), the output shaft of the second motor (51) passes through the upper end of the upper box (5) and is fixedly connected with a gear (52), a feed cylinder (6) is fixedly connected through the upper end of the upper box (5), and a sealing mechanism for the lower end of the feed cylinder (6) is provided inside the feed cylinder (6); Multiple discharge slots (8) are provided through the lower end of the lower box (4). A central cylinder (9) and an electric heating rod (12) are fixedly connected to the center of the bottom surface of the inner wall of the lower box (4). Multiple air outlet slots (10) are provided through the side wall of the central cylinder (9). The air outlet of a blower (11) is fixedly connected to the upper end of the central cylinder (9). A screening box (13) is placed on the bottom surface of the inner wall of the lower box (4). A sliding cylinder (14) is fixedly connected through the center of the upper end of the screening box (13). The inner wall of the slide cylinder (14) is attached to the side wall of the central cylinder (9). Multiple air outlets (15) are opened through the side wall of the slide cylinder (14). Multiple screen holes (16) are opened through the lower end of the screening box (13). Steel wire mesh is fixedly connected to the air outlets (15) and the screen holes (16). The screen holes (16) and the discharge trough (8) are interconnected. A toothed ring (17) is fixedly connected to the upper part of the side wall of the slide cylinder (14). The toothed ring (17) and the gear (52) mesh with each other. A collection box (18) is placed on the upper end of the base plate (1).

2. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The sealing mechanism includes a fixed frame (61), an electric cylinder (62), and a sealing disc (63). The fixed frame (61) is fixed to the inner wall of the feed cylinder (6), the electric cylinder (62) is fixed to the inner wall of the fixed frame (61), the sealing disc (63) is fixed to the lower end of the output shaft of the electric cylinder (62), and the side wall of the sealing disc (63) is in contact with the inner wall of the feed cylinder (6).

3. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The support mechanism (2) includes a vertical block (21), a fixed seat (22), a rotating rod (23), and a rotating ring (24). The vertical block (21) is fixedly connected to both sides of the upper end of the base plate (1). The fixed seat (22) is fixedly connected to the upper inclined surface of the vertical block (21). The rotating rod (23) is rotatably installed on the inner wall of the two fixed seats (22). The rotating ring (24) is fixedly connected to the end of the two rotating rods (23) that are close to each other. The inner wall of the rotating ring (24) is fixedly connected to the side wall of the lower box (4). The first motor (3) is fixedly connected to the side end of one of the fixed seats (22). The output shaft of the first motor (3) is fixedly connected to the end of one of the rotating rods (23) that is away from the rotating ring (24).

4. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The central axes of the central cylinder (9) and the electric heating rod (12) are collinear, and the electric heating rod (12) is located inside the central cylinder (9).

5. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The outer diameter of the hair dryer (11) is smaller than the outer diameter of the central cylinder (9).

6. The millet impurity removal device based on airflow sorting according to claim 3, characterized in that: A limiting hole (7) is opened through the center of the upper end of the upper box (5), and the side wall of the blower (11) is attached to the inner wall of the limiting hole (7).

7. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The lower inner surface of the upper box (5) is attached to the upper surface of the screening box (13).

8. The millet impurity removal device based on airflow sorting according to claim 1, characterized in that: The lower outer surface of the upper box (5) and the upper surface of the lower box (4) are attached together.

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